SClassExtension-class {methods} | R Documentation |
An object from this class represents a single “is” relationship; lists of these objects are used to represent all the extensions (superclasses) and subclasses for a given class. The object contains information about how the relation is defined and methods to coerce, test, and replace correspondingly.
Objects from this class are generated by setIs
, both
from direct calls .
subClass,superClass
:from
, and to
arguments to setIs
. package
:coerce
:strict=TRUE
calls to the as
function, with
the full method constructed from this mechanically. test
:test
arguments to setIs
, this function is trivial. replace
:as(x,
Class) <- value
.simple
:"logical"
flag, TRUE
if this
is a simple relation, either because one class is contained in the
definition of another, or because a class has been explicitly
stated to extend a virtual class. For simple extensions, the
three methods are generated automatically.by
:dataPart
:"logical"
flag, TRUE
if
the extended class is in fact the data part of the subclass. In
this case the extended class is a basic class (i.e., a type).
No methods defined with class "SClassExtension"
in the
signature.
is
,
as
, and
classRepresentation-class
.